diff --git a/lib/Basics/Common.h b/lib/Basics/Common.h
index cd2898b843..76c6d7dc59 100644
--- a/lib/Basics/Common.h
+++ b/lib/Basics/Common.h
@@ -210,7 +210,7 @@ static inline uint32_t TRI_64to32 (uint64_t x) {
 /// (cache line) will be needed soon.
 ////////////////////////////////////////////////////////////////////////////////
 
-static inline TRI_MemoryPrefetch (void* p) {
+static inline void TRI_MemoryPrefetch (void* p) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////